There's just not the critical mass of knowledgeable users for professions outside of programming on any Lemmy instance, from what I can tell.
I kept my reddit account for the lawyers subreddit and some of the others around the practice of law, because I like the community of people who are in the same career as I am. I also tried esq.social (mastodon, matrix, and Lemmy instance for lawyers), but basically only the matrix server gets anything close to a critical mass of user engagement.
I'm considering creating a new reddit account for sports discussion, too, because there just isn't anything like the NBA subreddit.
There is !personalfinance@sopuli.xyz, which would be somewhat related to personal tax. There is also a Lemmy instance dedicated to finance. I don’t recall it off the top of my head but the instance joined Cloudflare so I immediately abandoned it.
For the record, lemmy.ml is a terrible place to discuss tax or personal finance. The admins of that instance treat personal finance questions as spam and even go over the heads of moderators to censor such discussion because of their political baggage. IMO sopuli.xyz might be a good place to create an account and create finance communities.
Thanks. For finance, there is also https://www.bogleheads.org too. They have a web presence which I have not tried except for their wiki which can be useful. There subreddit was pretty reasonable so I assume their web forum would be too.
I used the Bogleheads forum over 15 years ago. It eventually turned sour and I left.
One of my issues is that the banking and finance sector and consumers engaging in it are conservatives. So if you want to ask a question like “where can I find a relatively ethical bank/investment firm that does not invest in fossil fuels?” it’s alienating to right-wingers to consider ethics. They don’t see the ethical problems that plague the industry and at the same time they don’t recognize the concept of ethical consumption. They just expect everyone to look after number 1. Bogleheads had little tolerance for politics, which inherently forces a narrow discussion of what financial products bring what value to the selfish types of consumers who neglect ethics. They don’t want someone exposing JP Morgan’s investment in private prisons or fossil fuels, or even how JPM Chase has a sneaky anti-Tor policy to discover which of their customers use Tor. Bogleheads did not kill my account.. it was just that ethical topics either had crickets or hostility, and censorship. IIRC what ultimately drove me off was Bogleheads started blocking Tor or using Cloudflare or something that demonstrated disrespect for digital rights. But apparently they re-liberated their forums since it seems Tor is permitted again.